Improvement in corn-smellers



2Sheets-Sheet1. l. MARSHALL.. Gorn-Sheilers.

N0. 145,356. Patented Dec-9,1873.

@ l j: Mw/M/ 2 Sheets--Sheet 2.`

MARSHALL Corn-Shellers.

UNITED STATES ATENT .Felon JOHN MARSHALL, OF CORDOVA, ILLINOIS.

iMPRovEmENT mi coRN-sHELLER-s.

Specification forming part of Leiters Patent No. 145,356, dated December 9, 1873; application filled March e9, 1873.

To all whom 'it may concern Be it known that I, JOHN MARSHALL, of Cordova, in the county of Rock Island and State of Illinois, have invented a new and useful Improvement in Corn-Sheller, of which the following is a specification:

Figure l, Sheet 1, is a top view of my iinproved corn-Sheller. Fig. 2, Sheet l, is a side view of one of the cylinder-ribs. Fig. 3, Sheet l, is a detail top view of a portion of the concave. Fig. 4, Sheet l, is a detail cross-section of the same, taken through the line m x, Fig. 3. Fig. 5, Sheet 2, is a vertical longitudinal section of the machine, taken through the line {1/ y, Fig. l.

My invention relates to improvements in the construction of the concave and cylinder, as hereinafter described.

The corn to be shelled is placed in the hopper A, from which it is fed to the endless apron or elevator, which consists oi' a wide belt, B, provided with cross-slats C, and passing around rollers I), pivoted to the frame-work of the machine. From the upper end ofthe elevator B O I) the corn falls into the space between the cylinder and concave, where it is shelled. E is the cylinder, which is cast hollow, and with its shell about halt' an inch thick. The cylinder revolves in bearings upon the frame-work ot the machine.` In the shell ot' the cylinder E are formed a number ot' pairs ot holes to receive the shanks of ribs F. rlhese holes are arranged in four, more or less, rows, longitudinal with the cylinder, and in such a way that the ribs F ot' one row may be opposite the spaces between the ribs ot' the adjacent rows. rlhe ribs or teeth are made of' steel or wrought-iron, are half-round or half-oval in i'orm, and are provided at their ends with shanks projecting at right angles from their 1i at sides. The shanks ot' the ribs F, while hot, are passed through the holes in the shell ot' the cylinder E, and clinched upon its inner surface. The concave is made of cast-iron, in sections G, with semi-cylindrical ribs upon their inner or concave sides, as shown in Figs. 3 and 4. The sections G are arranged about a quarter or three-eighths ot' an inch apart, and their edges have oblong or oval notches formed in them, which are so arranged that the notches of the adjacent edges may alternate with each other.

It will be seen that while the said notches supplement the function of the parallel spaces between the sections in. aiding the ready discharge or escape of the shelled corn downward, their form and size are also such as to prevent the cobs taking the same course.

The sections G are made with a strong longitudinal rib upon their outer or convex sides, and their ends are inserted in grooves in the curved side pieces H. The side pieces I'I are made of cast-iron, and are secured to the concave sections G, to each other, and to the framework of the machine by long bolts I. One of the bolts I passes through at the back end ol the concave, and the others pass through the spaces between the sections ofthe concave. The bolts I that pass through the frame of the machine pass through slots in the said frame, so that the position of the concave may be ad justed by simply loosening the heads of said bolts, and moving the concave into the required. position. rlhe front end of the concave is regulated by gage-screws J.

As the corn is shelled, the kernels pass through the spaces between the sections of the concave Gr to the apron K, down which they slide to the spout in the bottom of box L, through which, they pass to the elevator M, the discharge-spout N of which delivers them into any desired receiver. rlhe cobs, and pos sibl y a very few ol' the kernels, will pass over the rear end of the concave Gr, slide down the apron or guide-board O to the screen P or' the shoe QJ, and the cobs fall l'roin the rear end of said screen. The kernels pass through the screen I), and slide down the guide-board It ot the shoe Q into the box L. As the grain falls into the box L it is exposed to a blast from the fan-blower S, by which the chai is blown out at the rear end of the machine. The tailings are received in a spout in the rea-r part of the box L, by which they are conducted to the elevator T, and are delivered by its spout U upon the endless apron B O, to again pass yhrough the machine. The box L is agitated laterally to facilitate the passage ot' the corn, and the screenshoe Q is agitated longitudinally to facilitate the escape of the cobs.

The various operating parts of the machine are connected by bands vand pulleys, or other suitable gearing, and are driven from any convenient power.

Having thus described my invention, together with such other parts as are necessary to form a complete or Working machine, I claim- 1. The concave formed of the sections G, having notches in their edges, and arranged near together, as and for the purpose specified.

2. The ribs F, made ila-t on the under side, oval on the upper side, and terminating at their ends in tapered Shanks, and secured to the hollow metallic cylinder by bending said Shanks, as shown and described.

JOHN MARSHALL.

Witnesses: l

JOSEPH F. CRANsToN, I. S. PHILLIPS. 

